Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
060054lightly pollutedexcellent101excellent
050054lightly pollutedexcellent101excellent
040049lightly pollutedexcellent101excellent
030046lightly pollutedexcellent91excellent
020048lightly pollutedexcellent91excellent
010044lightly pollutedexcellent91excellent
000041lightly pollutedexcellent71excellent
230033goodexcellent61excellent
220033goodexcellent61excellent
210024goodexcellent61excellent
200029goodexcellent61excellent
190024goodexcellent51excellent
180024goodexcellent51excellent
170017goodexcellent41excellent
160018goodexcellent41excellent
150014goodexcellent41excellent
140020goodexcellent41excellent
130021goodexcellent41excellent
120019goodexcellent41excellent
110015goodexcellent51excellent
100021goodexcellent61excellent
090022goodexcellent71excellent
080025goodexcellent71excellent
070024goodexcellent71excellent